Updated openstack/openstack
Project: openstack-dev/pbr  fa17f42d7d195dab77c042ac4881ac63bfb638f3

Allow examining parsing exceptions.

Having to put breakpoints in pbr to diagnose issues is bad for dealing
with reports from users.

Change-Id: Ifecf4c4e4bb5955e0e5feb4bf5b5b85150b08ebe